Aii;;il»t in, ISl^il 



HARDWOOD RECORD 



15 



^Substitution of Oak for Other Woods 



Is Oak the Best Wood for Your Use? 



By David G. White, Forest Examiner, U. S. Forest Service 







• /;; 



f •■ • • • *1 «.' • 



•••I 



•• 



•»• 





•• 



siyy. 







• •• 



Red Oak 



Live Oak 



White Oak 



Aside from such quostions as price :iihI avMilabilitv uf material. 

 probably the most correct method of determining whetlier oalc or 

 some other wood is the proper one to meet certain requirements is 

 not to rely upon statistical information which may be based on 

 incorrect usage, but to compare the properties of oak with those of 

 other woods, considering especially those properties which are 

 most highly desirable for the given use. 



The term ''strength.'' in referring to woo.l. usually conveys the 



idea of a summation of the mechanical properties or the ability 

 of the wood to resist stresses and deformations of various kinds. 

 These properties are variously combined when one thinks of mate- 

 rial for a specific use. For a beam or jiost in a building, we com- 

 bine those properties that are essential to carry a load, or in other 

 instances stiffness may be the principal property desired; for a 

 floor we think of hardness; for .i double-tree the idea of shock- 

 resistiuK ability is '.ippermost — thus the definition of strength varies 



Tyts^.^ z 



PaKSICAL «fr KRCHANICA*. PRO] RRTIFB OP WOOliS CF:"Wir IH TfT" 'JiriTUT 57ATRE 



. B.-i:^ f.r Pci*^ 



SbocK tBoHtlng AUllly^ 



i^ 



•B9.IU0- : »<«lsM^ 

 :tlor. : 5; 



:rae»or*;Grflen:Alr-ilTy-; 



;RbAjo- : 



WelghtS ; 



■Rtduo- : W-»lghl* 



: tlon ■."-' 



:f±ot«r*:Cr«eT>:Airr 



;rc4..-- : ■eight-' 



: 'ler * —^ 



:'ftolor*:Ore9n:Air-dryT 



»eie*it^ 



Ststt^.iibdgdini 



M- '-f.H^*-, . : 1.90 



T.e. «t r.L.-' r I.St 



••-s. ,- T.V.- ; .80 



T.6. »t PtL, '■ r.90 



w^.arVctr.* : J.JO 



•CoKti.y?r]i"n-: 



: nculi*r \t3 



:gruln 



;Br J Mr lna«u: 



:RftU«l nni-J-: 



: ri*a> 



: faAXdB*a» 





:Stitlc t-njln,*: 

 : »<._'lc to Uax. : 



loal : 1.000 



: To'.>l work .^(1 



■ HoirfJ.t -.r 



- dii/i. ; .}>§ 



: u. or 1.7 ; 



: «. cf a.' : 



*Cooi> •farajLlol : 



1.00 

 1.00 



p 5» •■•>tim« xhon Kr-'wu. 



tiiblc lv»j«cjnc graTity (C)i 



Etriiit'li ,a« » tiOD pr post - SOPOt 



Shock /MtttlDic Abl'ity '• 44.5 0^>(^ 



fttlCfQBM ' - 300. C 



nrlptagf - 26.5 c 



■I- z.l'-t'jj;c.,.';it:&* ■'■; 

 fir*t iro[orty, -^J-.icJ 

 ties ll**u,t bolaw ae > 



>;. cr «. 





nii'turii. 



,>■- si.--'.-; »i)u»c vfpxs rB*.c«d •& li t 

 follt^lr.fi s;;rcxlna*.t r*nii.-];-r which r 

 ••iirrc^ llntto: 



iiUar Ic v«r o*nl 



.^I'ra 1* ittcv* 12 



. o(AP-Ej 



K^'SIM 



16 -K 



I^jp - Vklu« At 12 par ecnt aoljotun 

 A£ • Val'..a alr-dr> aa tastad.' 

 K - Pox oant nolatgco »• trcteii. 



the T»rio\T irc:ar'5-p IrclL^ei In the oofl.]ralta 

 olot 'Yt grcatrr rellablM'j cf the «alu«a baaeJ 

 teata due '.o 'tc £raatrr «nounT of data. 



y.S. at f.L. - r\\>-.t ►Ti-FO 1* -I-'--!.- UkI*. 



r. :r y. - KcA*;.,! cf .Irrtlel*;. 



rc-.T- f.i.v:cr 

 wriEii.iPccKsiji 



RT.-ICTT JUX? 15, 1920. 



ral.^j, ■ 

 en Srrtr 



